Q17 of 37 Page 195

If x ∝ yz and y ∝ zx let us show that z is a non zero constant.

Given: x ∝ yz and y ∝ zx

x = kyz


y = mzx


Put the value of y in x.


x = k(mzx)z


x = kmxz2




As k and m are constant.


⇒ z ∝ non zero constant


Hence proved.


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